1. Medicare payments for procedures performed in ambulatory surgery centers compared with hospital outpatient departments;Federated Ambulatory Surgery Association,2005
2. The importance of the ambulatory endoscopy center (AEC) to the gastroenterology practice;Frakes,2006
3. Medicare RBRVS: the physician guide;American Medical Association,2004
4. Outpatient endoscopy: possibilities for the office;Pike;Gastrointest Endosc Clin North Am,2002
5. Office endoscopy or an endoscopic ambulatory surgery center?;Overholt;Gastroenterologist,1993